The effectiveness of recycled aggregates in the structural integrity of concrete / by Leandro Manuel M. Ng, Angela H. Uy, Rob Denzel C. Lim, Cristian Eduardo G. II Sta. Ana, Christelle Mae D. Dolar, Kirsten Kate J. Hsu, Zach Liam V. Bejar, & Zirach N. Salvan.

The study was conducted to promote recycling by utilizing glass and plastic wastes by repurposing it into usable products, specifically in the form of sustainable concrete. To fulfill the purpose of the study, plastic waste was sourced from Ateneo de Iloilo-SMCS, while glass waste was collected from Anthonette Glass & Aluminum Services. These wastes were converted into fine and coarse aggregates, respectively. These were incorporated into a standard concrete mixture to produce sustainable concrete which underwent a curing period of 15 days. Four samples with different ratios were created. The quantity of gravel and cement remained constant among all samples, with varying quantities of natural sand, fine glass, and coarse plastic aggregates per sample. After the curing period, it was sent to a Department of Public Works and Highways, an accredited testing center (EB Testing Center) for the samples to be tested on its compressive strength, weight, and water absorption to assess its structural integrity. This is to determine whether there is a significant difference between the structural integrity attained amongst the different ratios. To synthesize the results gathered, the data was analyzed through the One-Sample Kolmogorov-Smirnov statistical test. It revealed that there was no significant difference between the samples of concrete and their different ratios. Finally, it can be concluded that with the composition of concrete ratio used, there is no significant difference in their structural integrity, although in a technical scale sample 1 outperformed the other samples as it attained the highest compressive strength and lowest water absorption rate.

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